*{
  margin: 0;
  padding: 0;
}
#keyboard-ipt{
  display: block;
  margin: 20px auto;
  width: 80%;
  height: 50px;
  border: 1px solid orange;
  border-radius: 5px;
  font-size: 20px;
  outline: none;

}
.keyboard-container{
  -webkit-tap-highlight-color:rgba(0, 0, 0, 0);
  -moz-tap-highlight-color:rgba(0, 0, 0, 0);
  -ms-tap-highlight-color:rgba(0, 0, 0, 0);
  -o-tap-highlight-color:rgba(0, 0, 0, 0);
  tap-highlight-color:rgba(0, 0, 0, 0);
  width: 100%;
  margin: 0;
  padding: 0;
  list-style-type: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: -80vh;
  transition: bottom .2s ease-in-out;
  box-sizing: border-box;
  border-top: 1px solid #ccc;
  border-left: 1px solid #ccc;
  li{
    cursor: pointer;
    width: 33.3333%;
    box-sizing: border-box;
    height: 50px;
    border-right: 1px solid #ccc;
    border-bottom: 1px solid #ccc;
    display: inline-block;
    text-align: center;
    line-height: 50px;
  }
}
.btn{
  border-radius: 5px;
  font-size: 20px;
  display: block;
  margin: 20px auto;
  width: 80%;
  height: 50px;
  line-height: 50px;
  text-align: center;
}
.btn-default{
  background:#cccccc;

}
.btn-success{
  background:orangered;
}